Why can some visuospatial tasks coexist with verbal tasks without strong interference?

• A. They depend on different subsystems (VSSP vs PL) or the EB integrates information, reducing direct competition for the CE.
• B. Verbal tasks always interfere with visuospatial tasks.
• C. All tasks share identical resources.
• D. The CE controls both but cannot manage cross-domain tasks.

Answer: (A)

Visuospatial tasks can run alongside verbal tasks with little interference because the Working Memory Model uses separate subsystems for different kinds of information. The visuospatial sketchpad handles visual and spatial data, while the phonological loop processes verbal or auditory information. When tasks tap different subsystems, they don’t compete for the same resources, so the central executive isn’t overwhelmed trying to juggle them. The episodic buffer can also bind information from these different sources, providing a shared storage that reduces direct competition for the central executive. Interference is more likely when tasks demand the same subsystem or rely heavily on the central executive itself.